Computer/Windows/Office/ Discussion Blog

September 8, 2017

What does “CL” mean?

Filed under: computer knowledge — admin @ 6:27 pm

Q: what does “CL” mean? What do you mean by the CL=2 and CL=3 of the memory? What’s the difference between them? Is the memory bar of CL=2 better than the CL=3 memory bar?

Answer: CL is the abbreviation of Latency CAS CPU, refers to the actual start waiting time required to read data in the received data read a column memory address instruction, CL=2 refers to the waiting time for the 2 CPU clock cycle, while CL=3 is a 3 CPU clock cycle. For today’s high-speed CPU, the length of the 1 clock cycles is minimal. Therefore, regardless of CL=2 or CL=3 memory, users in the actual use is almost no sense of performance gap. And manufacturers in the production of memory, regardless of CL=2 or CL=3, are using the same raw materials and equipment. Only after the completion of production testing, pick out the high precision, when the CL=2 sell, the accuracy is relatively low, then when the CL=3 sell. In fact, a lot of memory sold as CL=3 can also work under CL=2.

September 6, 2017

avance sound chip

Filed under: computer knowledge — admin @ 6:34 pm

Q: I am a rookie, recently going to study computer, usually also use the computer to access the Internet, typing practice, but also to listen to music, look at what the VCD movie, so some time ago bought a second-hand computer, want to reinstall the system, but not in the sound card driver disk, check the device manager system “display” avance sound chip “, at the same time the sound card is also close to the” TW ELECTRONICS CO.ltd “logo, excuse me, how can I find the driver card?
Answer: first of all, the “device manager” in the sound card driver symbol for “avance sound chip”, indicating that the sound chipset manufacturers for the avance (official website address: http://www.avance.com), and “TW ELECTRONICS CO.ltd” logo can only show the sound card is the Taiwan factory, to get the sound card driver, you can log on to avance the official website, and then “DRIVERS” link, and follow the prompts to download a driver download management software “Driver Detective”. Install and run “Driver Detective”, in the “Run Driver Detective” interface button, later will be transferred to a web interface, then there will be sound after the test results, finally will provide a sound card driver download.

September 5, 2017

What is Xpress Recovery?

Filed under: computer knowledge — admin @ 6:23 pm

Q: my motherboard for Gigabyte 945 motherboard, the motherboard supports Gigabyte Xpress Recovery function, but press F9 BIOS in the post screen when Xpress Recovery interface does not start, tried many times without success, how to start it?

Answer: start Gigabyte motherboard Xpress Recovery function, used by pressing the F9 key at boot time, but now Gigabyte has the Xpress Recovery function integrated in the motherboard with the CD driver, to boot into the press Del BIOS set, will start the order set to drive light first, then the driver CD into the CD-ROM drive, and restart the computer. When you start from the CD, the corresponding menu appears on the screen. You can use this function successfully by selecting the “Xpress Recovery” command from the menu. However, it should be noted that the BIOS Rescue feature takes about 6MB of hard disk space.

September 4, 2017

What about losing BIOS?

Filed under: computer knowledge — admin @ 6:07 pm

Q: I built a computer last year, less than 3 months on the failure, start every time to enter the BIOS to reset the system time and CPU, memory and other parameters, get the dealer maintenance, the other helped me change the motherboard battery, solve the problem. But after half a month, the same problem appears again. How can I solve it?

Answer: every boot should reset the time, usually BIOS, in the data storage problems, the most common case is the motherboard battery is out of power. In general, the new battery can maintain at least 2 years of normal power supply. But from what you say, it’s not as simple as a battery failure. It’s impossible for the motherboard to run out of battery power so quickly. First check if the contact is bad, check the contact point of the motherboard battery, if the contact is not tight enough, can be adjusted properly, such as a small piece of copper at the touch point. Of course, does not rule out the CMOS circuit board problem, including the relevant circuit board and save the BIOS program CMOS has quality problems, such as the warranty period can be motherboard repair.

September 3, 2017

How does win7 view computer usage records?

Filed under: windows 7 — admin @ 6:16 pm

In life, there are always people who like to pry into other people’s privacy. If someone else without permission using your computer, you want to know the computer boot off time of the record of how to view? Many users do not understand how to operate, follow the following tutorial take a look at the win7 view computer usage.

1, right-click on the desktop “computer”, select “management”.

2, in the open window, in turn, expand the “system tools – event viewer, -Windows log – system”, in the right window, we can see the use of computer records and other information.

3, we can find an event in the right window, ID corresponds to the last 6006 of the shutdown information and event ID for 6005 corresponding to the last boot information.

 

 

August 31, 2017

Win10 doesn’t have a IE browser

Filed under: windows 10 — admin @ 6:28 pm

After the win10 system upgrade, many users can’t find the IE browser’s location, then you can find and open the IE browser at this time.

1, right click the start menu, select the control panel”;

2, in the control panel window, click the “program” option to enter;

3. “Enable or close the Windows function.””;

4. Tick the “ie11 browser” in the function list and click “OK””;

5. Wait for system function call;

6, enable success, click restart the computer.

August 29, 2017

How to connect WiFi of Desktop win10

Filed under: windows 10 — admin @ 5:46 pm

1. click the network icon on the lower right corner of the computer.

2. select the WiFi that you want to connect to.

3. click “connect””.

4. enter the password, click on “next” to connect.

 

August 28, 2017

How does the Windows Server 2008/2012 disable the SMBv1 protocol?

Filed under: computer knowledge — admin @ 5:40 pm

How does Windows Server 2008/2012 disable SMBv1 services because someone recently broke the 0 Day vulnerability associated with the Windows SMB protocol?. The vulnerability can be exploited for remote DOS attacks, causing memory exhaustion in the Windows system. According to the researchers, the vulnerability analysis is the “eternal blue” vulnerability derived from the new vulnerabilities, the official Microsoft believes that the flaw belongs to the medium, not to fix this vulnerability, and recommend users to avoid by disabling the SMBv1 protocol.
Vulnerability information
[CVE-ID]: None
[vulnerability type]: Remote Denial of Service Vulnerability
[hazard rank]: high risk
[system that affects]:Windows version 2000 and above to run SMBv1 protocol
Two, vulnerability analysis
Unlike a DDoS attack initiated by a common botnet approach, an attacker can exploit the vulnerability with a single machine to cause the target Windows system to crash. According to the safety of dogs preliminary analysis of nonpaged pool Windows kernel (non-paged pool) on the treatment of memory allocation problems, may lead to memory pool depletion. A remote attacker can cause all available memory allocation by sending Windows SMB message system specially opened 139 or 445 ports, the operating system will be dead in all memory, but will not record the log or the system blue screen, so the remote attacker can use loopholes in the implementation of DoS attack.
Three, investigation methods
1, Windows Server 2012 check SMBv1 status method:
Open the “Windows PowerShell” program in the start menu, enter and execute the following instructions on the command line:
Get-SmbServerConfiguration Select EnableSMB1Protocol |
If Ture is printed, the SMBv1 is opened.
2, Windows Server 2008 check SMBv1 status method:
Open the run program in the start menu, execute the regedit command, open the registry, add SMB1 in the following registry subkey, type REG_DWORD, and set the value to 0:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters
When the SMB1 value is 0, the SMBv1 state is disabled
When the SMB1 value is 1, the SMBv1 status is enabled
Four, emergency handling methods
Note: please backup the data before you repair it and test it fully.
1. close SMBv1
A) Windows Server 2012 method of closing SMBv1
Run commands in power shell:
Set-SmbServerConfiguration -EnableSMB1Protocol $false
B) Windows Server 2008 disables SMBv1
Use the Windows PowerShell or registry editor

August 27, 2017

How does socket 939 CPU choose?

Filed under: computer knowledge — admin @ 5:43 pm

Q: I am a rookie, just started to learn the computer soon heard that AMD CPU is very good, with superiors said to buy buy Socket939 platform, so be yearning, I do not know “old” how do you think? Could you tell me how to choose socket 939 CPU?
Answer: Recently, 939 platform motherboard “down” a sound. I believe so, 939 days will replace the 754 platform platform The day is not too distant when. As the 939 platform product line is more confusing, we need to pay more attention when shopping. The most popular Socket 939 Athlon64 processor core now includes Newcastle, Winchester, Venice, and the latest San Diego. The Winchester core is not much different from the previous Newcastle kernel, using the 90nm process, the CPU number, and the last two is BI.
Venice is the successor of Winchester, introduced the SSE3 instruction set, improved memory controller and Winchester core CPU looks very similar, but the number two is BP, in fact, this is we often say that the E3 version, in addition there is a market it improved E6 version, fixes a lot of BUG, so if choose between E3 and E6, the best choice of the latter, please remember it the number of the last two BW. The latest SanDiego core L2 cache capacity doubled, the step code is E4, and the last two letters of the number is “BN””. When buying CPU, we can pay attention to whether authentic, and pay attention to CPU number code, do not be fooled by JS.

August 26, 2017

How do I encrypt folders?

Filed under: computer knowledge — admin @ 6:16 pm

I’m using the Vista home edition, and I want to encrypt some files and folders. I wonder if it can be implemented
Vista does provide this functionality, but only the Windows Vista Enterprise (commercial Advanced Edition) and Ultimate (Ultimate) provide system level security protection for BitLocker. In addition to BitLocker, we can also use EFS for more flexible data protection in Windows Vista. EFS can store files or folders in encrypted form on the hard disk, so that encrypted files or folders can only be opened by authenticated users with the correct certificate. It is necessary to point out that EFS can only be used in the NTFS file system on the hard disk, and the compression function with NTFS is not used at the same time, that is to say, for a specific file, if you use a file compression function, then will not be on the implementation of encryption. In addition, it must be clear that the Windows, Vista, Starter, Windows, Vista, Home, Basic, and Windows Vista, Home, and Premium versions of EFS support are not complete, only partial functions can be implemented.

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