Vista - Startup Repair by 'BadDriver'

Hello,

I've reinstalled my Windows Vista because I was getting 'Startup Repair' while booting. I thought formatting and reinstalling would help, so it seems not. I'm still getting Startup Repair when starting up my computer (let's say the chance of getting one is about 50%).
It suggests restoring to an earlier point where everything worked, but it does not. However, when I cancel the option to restore my system it says following:

Startup Repair could not fix this computer automatically:

Problem Details

Problem Event Name: StartupRepairV2
Problem Signature 01: AutoFailover
Problem Signature 02: 6.0.6000.16356.6.0.6001.18000
Problem Signature 03: 2
Problem Signature 04: 65537
Problem Signature 05: unknown
Problem Signature 06: BadDriver
Problem Signature 07: 0
Problem Signature 08: 3
Problem Signature 09: WrpRepair
Problem Signature 10: 2
OS Version: 6.0.6000.2.0.0.256.1
Locale ID: 1033

Especially the 'BadDriver' thingy actracts my attention. Though I do not have a clue which driver it could be (if this really is the problem)..

Some help is greatly appreciated,,