Windows frozen, Ctrl+Alt+Del doesn't work

[Hrant]

My 64-bit Windows 7 often freezes up and Ctrl+Alt+Del doesn't work. Please help.

 

[marsmimar]

Do these freezes happen at random times or only when you're doing some specific computer task?

At a minimum I'd run a full scan for malware using your installed AV of choice. I'd follow up with a second scan using the free and highly recommended Malwarebytes.

https://www.malwarebytes.org/products/

I'd also check to see if you have any damaged or corrupt system files by running a System File Checker scan from an elevated command prompt (Option Two, this tutorial.) If any problems are detected run the scan three more times and reboot your computer after each scan.

http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

I'd also suggest going through this troubleshooting tutorial prepared by one of the Forum experts. Follow the steps in the order given and don't skip any.

http://www.sevenforums.com/tutorials/220165-troubleshooting-steps-windows-7-a.html

 

[lehnerus2000]

Check Disk

Also test your HDD with Check Disk.

Tutorial
http://www.sevenforums.com/tutorials/433-disk-check.html

 

[Hrant]

Dear Marsmimar,

Thank you very much for trying to help me. I tried the recommendations you'd advised, unfortunately the problem still exists. The problem appeared after upgrading the Windows from 32 to 64 bit. Generally the problem appears when I'm on-line (Chrome or Firefox). I repaired the system by the installation CD, but there was no use.

 

[RolandJS]

How did you upgrade from 32 to 64? Did you have to go through a total ReInstall?

 

[Hrant]

I just formatted drive C and installed a new copy of 64-bit.

 

[oscer1]

hi are all the driver installed any error in device manager?

 

[Hrant]

Yes, all the drivers are installed and there is no error in the Device manager.

 

[marsmimar]

Since this is a new install you might consider doing a repair install. Perhaps there was a glitch or hiccup during the initial install.

http://www.sevenforums.com/tutorials/3413-repair-install.html

 

[Hrant]

I did it twice, no use. Additional info: I noticed that usually Windows freezes up when I try to watch a video online.

 

[realtalk]

I find it VERY odd that all replies to this thread just stop 2 years ago. Like no one else has this problem? My problem is IDENTICAL to the OP and it ONLY happens when connected to the internet.

 

[mrjimphelps]

I find it VERY odd that all replies to this thread just stop 2 years ago. Like no one else has this problem? My problem is IDENTICAL to the OP and it ONLY happens when connected to the internet.

Here's the question I would ask the OP if he were around: Is your computer 32-bit or 64-bit? If your computer is 32-bit, then you should not have installed 64-bit Windows. That could explain the behavior you are seeing. Do a clean install of 32-bit Windows and see if the problem goes away.

Second question: How much memory do you have in the computer? If you don't have at least 4 GB, then that could explain why the problems started when you went from 32-bit to 64-bit Windows.

If the computer cannot take 4 GB of RAM (I have a computer that maxes out at 2 GB of RAM), then it is a 32-bit computer, and you should definitely stay with 32-bit Windows.

Now to your situation: Since the problem occurs only when you are on the internet, there are probably long-running scripts running in the background at the slow sites. I suggest that you try Firefox with the NoScript (or NoScript Lite) extension installed. Remove all sites from the NoScript white list; then, as you surf the web, add only those sites which are necessary to the white list. For example, if you go to your bank's web site (e.g. www.mybank.com), add only that site to the white list. This is a tedious process, but you will very quickly see if it is the scripts which are slowing you down.

The new Firefox is a lot faster than previous versions of FF. You may find that it is fast enough without NoScript. Also, Opera is fast. But the fastest surfing experience will be FireFox with NoScript.