Laptop goes to white screen response from support engineer

Support Engineer

Hi,
1.       Do you receive any error message?
2.       Have you made any changes to the computer prior to this issue?

There is a possibility that some third party programs installed on the computer is causing the issue.

Method 1:
Step 1:
You may try to boot the computer in safe mode. Refer the following link.
 Start your computer in safe mode
http://windows.microsoft.com/en-US/windows7/Start-your-computer-in-safe-mode

Step 2:
If this issue doesn’t occur in safe mode then you may perform a clean boot. Refer the following article.
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
http://support.microsoft.com/kb/929135
NOTE: Once you are done with clean boot, please follow step 7 in the article to set your computer back to normal startup.

Method 2:
You may try to perform SFC (System File Checker) scan on your computer and check. Refer the following article.
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7
http://support.microsoft.com/kb/929833

Method 3:
I would also suggest you to scan your computer with Microsoft Safety Scanner, which would help us to get rid of viruses, spyware, and other malicious software.
The Microsoft Safety Scanner is a free downloadable security tool that provides on-demand scanning and helps remove viruses, spyware, and other malicious software. It works with your existing antivirus software.
http://www.microsoft.com/security/scanner/en-us/default.aspx
Note: The Microsoft Safety Scanner expires 10 days after being downloaded. To rerun a scan with the latest anti-malware definitions, download and run the Microsoft Safety Scanner again.
Note: Any data that are infected may only be cleaned by deleting the entire data, which means there is a potential for data loss.

System Restore from Command Prompt Windows XP & 7

At the Command Prompt, type C:\windows\system32\restore\rstrui.exe and press Enter. -For Xp
At the command prompt, type cd restore, and then press ENTER.
Next,we will type rstrui.exe , and then press ENTER. - For Windows 7
This has removed the Police virus for me twice so far!

Emachines netbook reinstall O/S to factory default

1. Restart the computer.
2. When the eMachines logo appears on the screen, press the left Alt, and the F10 keys.
3. If you are prompted with a Microsoft Windows boot screen, press the Enter key.
4. After the Acer eRecovery Management application has loaded, select your restore type.
5. Read the notice, and then click Next when you are ready.
6. Click Next to begin the restore process. The restore can take anywhere fom 10 minutes up to an hour.
7. Once the restore is complete your computer will reboot. Upon rebooting it will load Windows and start installing your drivers and software. Your computer will reboot several times during this process. After everything is complete your computer will be like it was when you first purchased it.

No Internet Yellow triangle on icon

No connection wired or wireless. Uninstalled/updated drivers- no good.
Installed 'Tenda' adapter still nothing, although no wired connection should have told me that.
removed security from SSID - again no wired should have alerted me to it being not wireless related!
Ran a 'Ping'- in CMD typed ping 192.168.1.254 -that is 'ping' space 192...
returned: no packets sent, on working pc returned packets sent=4 recieved =4 lost=0

Vodafone said 'software issue' 

uninstalled McAfee turned off firewall - it worked. 

Still Not Working, try this too.
Software Firewalls.
Make sure that the Software Firewall on each computer allows free local traffic. If you use 3rd party Firewall Windows Firewall has to be Off, and the active Firewall has to adjusted to your Network IP numbers on what is some time called the Trusted Zone (consult your 3rd Party Firewall instructions

General example,  http://www.ezlan.net/faq#trusted

Please Note that some 3rd party Software Firewalls keep blocking aspects of Local Traffic even it they are turned Off (disabled). If possible configure the Firewall correctly, or totally uninstall it to allow clean flow of local network traffic. If the 3rd party software is uninstalled or disables, make sure that Windows native Firewall is On .
If you Uninstalled any of the applications mentioned above do this.
Reset the Network Stacks .
Type Cmd in the Start Search text box.

Press Ctrl-Shift-Enter keyboard shortcut to run a  Command Prompt as an Administrator.  Allow elevation.

Type netsh winsock reset in the Command Prompt , and then press the Enter key.

Do the same process for refreshing the TCP/IP, just replace the typed command with.

netsh int ip reset
Restart the computer.