Can't Repair XP

[Grand Maester]

I have tried to repair XP installations on two separate systems but in both cases I get a bunch of messages saying it can't find files. When I locate them on the disc it won't recognize them. These are both OEM discs and I know I've done it before with both systems. Unfortunately, I don't have the stats for my XP system (one of the two has since died of a hardware problem that is irreparable), handy at the moment. I'll try to update this later with them, but in the meantime, can someone offer a solution without them?

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Model: Sony VAIO CS

OS: Windows Vista Home Premium SP1 (64-Bit)

Processor: Intel Mobile Core 2 Duo T8100 (2.1 GHz)

RAM: 4GB DDR2 400MHz (2GBX2)

Hard Drive: 320 GB (Manufacturer Unknown)

Network Adapter: Marvell Yukon 88E8040 PCI-E Fast Ethernet Controller

Security Software: Comodo Internet Security