BSOD error code 0x0000007A....

Hi guys....I'm running Vista on an 18 month old Inspirion 1525 and it was dropped off small table (2ft high) for the 1st time a few days ago. It was dropped for the 2nd time in 18+ months approx 13 mins later.

Things were not going too bad until a windows update last night/this morning.(maybe coincidental timing)

Was freezing like crazy on start-up this morning taking 10-15 mins to become reasonably manageable, but still stalling/freezing at times. Lots of (Not Responding) programs and messages saying features have stopped working, (Google sidebar has stopped working. Audio Drivers have stopped working etc etc)

Started to get BSOD a few times afterwards, once when I was running a few programs (probably too many),MSN,WMP,few webpages and few folders open.

I'm in safe-mode atm, everything seems fine.

I have written down the STOP codes the last time BSOD happened. This is what I got.

KERNEL_DATA_INPAGE_ERROR

STOP : 0x0000007A (0xc0403E60,0xC0000185,0x3116E860,0x807cc324)

ataport.SYS - Address 807cc324 base at 807B5000 datestamp 49e01eee


All input would be much appreciated as I have no idea where to go from here.

Thanks.

 

This is from the minidump. (incase it was unclear in 1st post)

{c0403e60, c0000185, 3116e860, 807cc324}