restart problems

I'm running W7RC 7100 and love it, coming from XP. I should have gone with 64 bit, but installed x86.

Whenever I restart, I get an error message: "Disk boot failure, insert system disk and press Enter".

The only way to start it is to insert the Install DVD and boot from that. I select Repair/System Recovery Tools/Startup Repair. When I check the Repair Diagnostic log, it always reads the same- "Windows could not detect a problem". But then I can restart from the HD and everything starts properly.

I've tried it with the BIOS boot order as CD/HD and HD/CD.

I don't restart often- I leave my system on, but it is annoying. Any ideas? Or should I just install the 64 bit?

You know what, I'm going to install the 64 bit version. I think all I need is a new SCSI card.

When I installed the 64 bit, it started doing the same thing. After I turned off some services (thanks, Black Viper!), it's fine. It may just be a coincidence, but here's what I stopped:
- dist link tracking client
- home group list / home group prov
- human inter dev access
- ip helper
- offline files
- peer name section
- win card space
- windows search
I also turned off Indexing.

there no need to do so.
1st u go to control panel , then go to hardware section then cheek your power option. if it is all right form there, re-install your OS or change your OS.

if you having 3GB ram then you can install windowseven 64bit. try it, there will be no harm in it. if you get same problem then i will tell u to call a doctor for your computer.