Keep getting blue screens / crash dumps. ! inside triangle warning for on the Mass Storage Device and PCI Simple COms controller as well.

You can download the device drivers from ASUS WEB site. Select your model motherboard/computer/laptop, and make sure you select drivers that matches your Windows operating system. Please click on this link to their WEB support site : - http://support.asus.com/download/download.aspx?SLanguage=en-us

You can download the drivers from here

Hope this answers all your questions
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Windows is entirely in control of any blue screens; so the hardware spec is not relevant yet.
can you try reading your windows event log immediately after a crash? :::Start>all programs>administrative tools>event viewer

you are looking for an error mentioning a filename... C:\windows\~somepath~\Minidump.dmp
If you get yourself a copy of WinDB (here: http://msdn.microsoft.com/en-us/windows/hardware/gg463009)

You can then open WinDB and open/read that crash dump file (file open crash dump), and it will provide you with a filename of the driver that caused a problem (possibly even tell you what it was doing when it was called).. chances are it's one of the following causing the problem: Graphics Card drivers Storage controller drivers Motherboard drivers (Power Management related issue usually)
If you have the latest driver; then get the hardware checked out...

reinstall ur os,

this error says IRQ are in conflict as this means pci card is in hardware conflict with other devices. please check in device manager with device it is in conflict and update drivers

sounds like a printer or someother device was unplugged improperly has has created a conflick

I lost my sound device after I formatted windows XP professional SP2

This could be pretty complex. The ATAPI.SYS file controls the Hard Drive and CD-Rom Drive. I would recommend reading this MS TechNet article:
http://support.microsoft.com/kb/822051/ The article says that it's not uncommon for the problem to be caused by faulty memory or by problems in the mass storage controller subsystem, which makes sense since atapi.sys (a mass storage controller system file) is noted.
If you have multiple memory cards in the machine, it might not be a bad idea to take one out and try again. If the fails, keep swapping out memory cards until we either solve the problem, or elimite that as a cause.

i need drivers for my satellite L310, PLS HELP ME CNF7051 ETHERNET CONTROLLER MASS STORAGE CONTROLLER MODEM DEVICE ON HIGH DEFINITION AUDIO BUS PCI DEVICE SM BUS CONTROLLER VIDEO CONTOLLER VIDEO CONTROLLER(VGA) UNKNOWN DEVICE

Your friend is right,do it.