Problems following PSU breakdown

[Mavvy]

Hi everyone I wasn't quite sure where to place this so appologies if its not the optimal place! I recently upgraded the graphics card in my computer. It would appear the additional strain on the power supply wasnt to my PSU's liking and thus after about 20 minutes it over heated and died.  I promptly went and purchased a new higher power PSU which at first didnt seem to be accepted by the computer as it briefly hung on the windows screen but then restarted and ran relatively without a hitch. Oddly my mouse would sometimes act uncontrollably which was the first incling something might not be going so well. Unfortunately since then the computer would inconsistently start up. Again hanging on the windows 7 load screen as the logo begins to appear. Last night it decided it would not enter windows at all regardless of restarts. As if this wasnt annoying enough my keyboard now react on the initial activation screen to enter boot settings and such but immediately after this loses all lights and functions. I managed to run a RAM check from the advanced settings on the system crash screen. This was unremarkable. I then tried via the DOS options to load a recent recovery - there is only 1 on the system and this failed to work. I also tried reinstalling windows via the DOS prompt and this has unfortunately left me in the same place. Im at a bit of a loss to the next move i can make. Im assuming the HDD or Mother board may have been affected by a power surge when the PSU died but i wanted to check for advice before replacing either or which would be the logical choice to start with. Any advice will be greatly recieved! Thanks in advance</div>Jim</div>

[KenB]

Hi and welcome to ExTS

 

I have had to edit your post as it was virtually unreadable due to

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throughout the post.

 

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Windows cannot boot up at all - is this correct?

 

Can you get to the Advanced Startup Options by tapping F8 about once per second after switching on ?

If you can - try "Last Known Good Configuration"

 

Is "Repair this Computer" listed in the Advanced Options ?

[Mavvy]

Appologies posted this in two threads, copied it here and the formatting looks to have caused a problem.

 

I was unable to boot windows at all

From the advanced settings I had no joy with last known config or repair the computer

 

I've managed to reinstall Windows 7 afresh from the DOS prompt and still having the same problems. Im assuming its a hardware problem...

[KenB]

You got through the installation process - but it now fails to boot up again . ................is this correct?

 

Assuming this is a SATA hard drive ? ......can you connect it up to another system to run a check on the disk itself ?

You can use the existing SATA Data cable and a power connection from the other pc.

[Mavvy]

Yes its a SATA hard drive and indeed it still wont boot up following the windows installation. I dont have another PC i can connect it too but i wonder if a work mate can help me out. What would be the suggested disk check?

[KenB]

Connect the drive up to the second pc using a spare SATA connection on the m/board and a spare power connection.

If there isn't a spare power connection use the one off the CDROM drive.

 

Check that the drive is being recognised and is visible in "Computer".

 

Use this opportunity to take off the drive anything that you want by way of data / files / photos etc.

 

If the drive is visible make a note of the drive letter ( let's say Z:\ )

 

Start ....type in .....cmd ........do not hit ENTER yet

Right click on cmd.exe that shows top left of screen > Run as Administrator

At the prompt type in chkdsk Z: /r/f (space eitherside of Z: ) substitute your drive letter for Z:

 

This will check the drive for any errors and attempt to fix any that it finds.