Help with Windows start up repair or clean install

[CGOWAddict]

I want to do a start up repair but only have a upgrade disk. When I try to do the start up repair and pick the OS on the hard drive it comes up with a error saying the os is not compatible even tho the upgrade was done from this disk. Can I do a start up repair or clean install without losing any software or personal files? This computer has no back up's.

My reason for wanting to do a start up repair is yesterday when I woke up my computer from sleep mode the hard drive kept and is always accessing but the CPU was not really doing much so I had to wait and wait and wait. It will say a software is not responding then after a long wait time the file will open or a program will respond.To just open folder takes 5 min, open files 5+. re starting or starting from the off position takes about 15 min!!!!
Would love some advice.

I have a Acer Aspire 5253-BZ 660 Laptop
1 ghz AMD C-50 processor
8gb ram
Windows 7 64 bit

Thx in advance

 

[gregrocker]

I would work through these Troubleshooting Steps for Windows 7 to establish a clean boot, scan the logs for repeat errors, utilize system resources to finds solutions to problems. The steps lead up to possible Repair Install, Factory Recovery or Reinstall.

Startup Repair would only sort boot issues if you're having problems at the boot level. But you can run it to be sure. You only need a repair disk: System Repair Disc - Create

The error normally means you have a pre-SP1 installer. You can download and burn the latest installer from Steps 1 and 2 here: Clean Reinstall - Factory OEM Windows 7