Tried Taking Apart My Laptop, Now Windows Won't boot

This afternoon, I decided to take apart my laptop to see how much dust was in it because it freezes whenever I would do CPU or GPU heavy stuff. About half way through, my dad convinced me that it didn't look like there was enough dust and crap inside to worry about and convinced me to put it back together. I got more or less finished reassembling everything but I ended up with an extra screw

The first couple of times that I rebooted, I would just get a black screen. After that, the boot screen would appear and then I'd get the option to resume or go into my configurations(F1 or F10). I went in and scanned my HDD and memory for any errors, came up completely clean. Rebooted, got the same 2 options but decided to go ahead and resume normal boot up. Another screen showed up because there seemed to be a problem with my windows installation, told me to load up some windows recovery files to try and fix the issue or resume normal boot up. If I try to get it to load the recovery files, it just locks up while trying to do so. If I resume, I get a blue screen. A line from the blue screen reads "stop: 0x0000000a (0x00000034, 0x00000001, 0x81c85028"

My system is an HP Pavilion DV6700, came with Vista but upgraded to W7 Pro about a year ago.

Any ideas?


UPDATE: Good news, my system is working normally. All I did was remove the CMOS battery and re seated one of the RAM chips. That seems to have worked. I'll be back if I have anymore problems.

Stop: 0x0000000A (parameter1, parameter2, parameter3, parameter4)
IRQL_NOT_LESS_OR_EQUAL
*** Address x has base at x - filename
In this Stop error message, each parameter is a hexadecimal number that refers to a specific issue:

• Parameter 1 - An address that was referenced incorrectly.
• Parameter 2 - An IRQL that was required to access the memory.
• Parameter 3 - The type of access, where 0 is a read operation and 1 is a write operation.
• Parameter 4 - The address of the instruction that referenced memory in parameter 1.

[...]

This Stop error message usually occurs during installation when there was an attempt in kernel mode to touch pageable memory at too high a process internal request level (IRQL). Typically, this error occurs when a driver uses an incorrect memory address. Other possible causes of this error include an incompatible device driver, a general hardware problem, or incompatible software.

You receive a "Stop 0x0000000A" error message in Windows XP

I don't know what else to tell you but perhaps try inter-switching your memory or plugging them in and out. Also check if you missed to plug in some items or you miss to plug in something.