Hi have an Acer aspire 5670 laptop which is around 2 years old and is running a fully upto date XP and TI 11 again I install any updates for that available. I have just upgraded the hard drive from a 120 GB seagate to one of the new high capacity 320GB Toshiba drives. The original drive had 4 'partitions' 1) C: Primary Active. NTFS. Running XP. 34G 2) D: Primary. NTFS. Data partition. 72G 3) PQ. Primary. FAT32. I think that this is the acer recovery partition. Only 3.8G 4) Acronis recovery partition. FAT32. NO info on if it is logical or primary. 1.4G I got the above info from TI. I backed up all these partitions into one .tib file on an external usb drive and validated it and checked I could mount it. I then created a recovery disk CD. I then then swapped in the new drive and booted to the recovery CD. I restored each partition in turn as follows: 1) C>D. Active. Same Size. 2) D>E. Primary. Resized to fill new drive 3) PQ. Primary. Same Size and as FAT32 4) Acronis. Logical. Same size as FAT 32 You have to choose active, primary or logical when restoring so I chose the one that I thought matched the original. The drive letters were reassigned as the external usb drive took c: when running TI from the recovery CD. After a successful restore I rebooted and all went well. Even the drive letters had reassigned themselves back to C: and D: as before. After checking out all the basics were working I was very happy! Then around 10 mins in I had BSOD. and this happens every 5 or 10 mins. If I swap back the old drive its fine. Is it more likely to be the new drive causing the issue or the re-image? THE BSOD is saying bad pool header STOP 0X0...19. caused by a driver for hardware. I have never updated the BIOs but I assumed that the new drive would work fine. Am I assuming too much? The BIOS certainly recognises the drive. Any help welcome please..I dont want to spend hours trying different restores only to find its the drive. Similarly I dont want to take the risk of bricking teh laptop by having a bad BIOS flash experience.. I am not an expert on this stuff but am reasonably PC literate. Time is precious, Life is short. I dont want every day of the next week to turn in to some kind of computer hell...you may just be able to help! Scotster.