How do I reinstall windows 7 professional 32 bit?

I seem to have been hit by a virus of some sort and would like to re-install windows 7 professional 32-bit to hopefully wipeout the virus and start again. I’ve tried to re-install and have gotten some error messages. I have the windows 7 information on a USB and need help to get this computer working again.

I have also tried re-installing windows XP version with a CD, system attempts to start with RAID, etc. but then get error message and it does not complete the installation. Would prefer to stick with windows 7 version I have on it now.

Would appreciate all the help I can get, really desperate here. Thanks.

CPU Specifications
Dell Vostro 1500
Intel (R) Core (TM) 2 DUO CPU, T5470 @ 1.60 GHz
RAM 2.00 GB
Windows 7 Professional (32 Bit)

Problems
- Cannot open internet explorer (attempts to open page and closes out immediately)
- Cannot access several programs (example: MS Office)
- Do not have restore point & cannot create restore point (system restore does not function)
- Unable to re-install Windows 7 Professional
- Search feature does not function
- Limited access to features in control panel (not all links open)
- System does not populate any information for the hard drive (assuming disk partition)

Main Error Messages
- Windows Installer: The Windows Installer Service could not be accessed…windows installer not correctly installed.
- Install Windows: Windows could not retrieve information about the disks…

first use this tool and post all the files here

We will have a look and advice....

If nothing works then you can go ahead with a reinstal of windows 7

Can you read your key code on the COA on the bottom of the laptop ? If so you can download the ISO of your version, burn to dvd using Imgburn and reinstall.

Clean Install Windows 7

What method did you use to put the files on the usb drive ?

If you want to try to save the existing installation, work through these steps for Troubleshooting Windows 7 Failure to Boot.

If you want to reinstall, the steps are the same as these to Clean Reinstall - Factory OEM Windows 7.

thank you for your assistance, it worked out and got this back up and running :)