update windows XP on HP laptop 6540b

I have all of these updates installed on a couple of XP machines and I am not having any difficulty with them. I have clients with these updates installed and again no difficulty. I do not think the updates are a problem.

You could have viruses or other malware (very likely) or have installed a piece of software that is causing problems (probably less likely).  

What you might do is try installing these updates one at a time (you might need a couple if they are inter-related) and see if you can narrow down which updates are conflicting.

... Thinkpads_User

we've run a malware scan and virus scan and nothing was found.
we'll do a BIOS update and check for any updates on HP website...

I doubt its the update, but probably a driver/software compatibility issue. You can either update all of your drivers, bios, etc. Or you can post the crash file here and we can take a look at it(usually memory.dmp) also go to run--type eventvwr.msc--select system--and look for an error @ the same time it crashed--post details of the crash here

You might to run this update from HP for this machine: http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=321957&prodSeriesId=4095215&swItem=ob-89079-1&prodNameId=4095095&swEnvOID=1093&swLang=13&taskId=135&mode=4&idx=3

it was KB2393802 indeed.

Thank you much.   : )