PC freezing after short period

Sorry continue with which steps?

Ok I see them now,

No I'm not working from desktop I can only access from safe mode.

Ok have gone through the list and msconfig seems to have allowed me to load up windows back to desktop.

I have disabled everything in startup and Services and got back on.

The intial problem of being froze out after a limited time still happens though but i guess im back to an operating PC to backup up data in case fresh install is needed.

I checked System restore and all past restore points have been removed, i have started itagain but i guess not much point as problem still exists.

I did notice that Java installed new update around the time of initial problem also.

Uninstall all Java and reboot. Run for awhile to test difference. Then install latest Java if needed.

Run SFC /SCANNOW Command.

Test your hardware to eliminate that as cause, then report back.

SFC /SCANNOW Command. reported errors but i cant open the log it saved, it says access denied?

Uninstalled java just waiting to see how it goes.

Backing up files in mean time just in case.

Everything is still unchecked in msconfig and services is that ok?

You have damaged System Files. Run SFC again a few more times to see if it can repair them.

If not and performance continues to be affected run a Repair Install or invest now in the getting a perfect Clean Reinstall with our help.

I think clean re-install is the way to go and will most likely do so, but would like to get this back up and running properly or find out why this happened.
How can i view the log it created to see what files are damaged?

Ill run SFC again a few times and look at the Repair Install as well.

Outa interest do you guys the (best of the best) still do re-installs of Windows or because you know what your doing you dont need to ever do it?

I still reinstall at times, but prefer to use a backup image saved just after a perfect install is set up and running best. These same steps will assure you get and keep a perfect install: Clean Reinstall - Factory OEM Windows 7

Thanks good to know you guys still do from time to time :)

I think im going to do a fresh install, just gotta find the time to do so, maybe this weekend.

In the mean time i cant get MSE to run at all, i tried downloading version again but when trying to unpack and install it says 'File Corrupt'
Windows Defender however has found Trojan Dropper:Win32/sirefef.gen!C
Strange that neither MSE or Malwarebytes picked this up!
Do i just let Defender remove it?

Also working through the msconfig one at a time to test.

So far all been running for 12+ hours with no freezes, not sure if due to msonfig or java removed though.

Oh and what program do you use to create the image, i may give that try also once all back uo and running, would save a lot of hassle re-installing programs etc