BSOD and freeze all the time

my 4 year old dell freezes, restarts, and BSODs everyday when i first start it up and keeps doing it a few times before it finally boots up for good. after that its fine the rest of the evening, no problems at all until the next day. ive reinstalled windows, system restored, ran every diagnostic i can think of and they all show no errors. the BSODs say different erros like "system service exception" or irql equal not equal" or something like that and several other errors. i tried using windbg but couldnt quite wrap my head around it. ive attached my minidumps. system specs below:

Windows 7 Home Premium (x64) Service Pack 1 (build 7601)
Install Language: English (United States)
System Locale: English (United States)
Installed: 2/22/2014 7:32:10 PM
Boot Mode: BIOS (Secure Boot not supported)

DELL Inc. Studio XPS 435T/9000 00
System Service Tag: 9H6JML1 (support for this PC)
Chassis Serial Number: 9H6JML1
Enclosure Type: Desktop

2.67 gigahertz Intel Core i7 920
64 kilobyte primary memory cache
256 kilobyte secondary memory cache
8192 kilobyte tertiary memory cache
64-bit ready
Multi-core (4 total)
Hyper-threaded (8 total)

Board: DELL Inc. 0X501H A02
Serial Number: ..CN697029CU1246.
Bus Clock: 133 megahertz
BIOS: DELL INC. A16 07/28/2009

985.55 Gigabytes Usable Hard Drive Capacity
903.64 Gigabytes Hard Drive Free Space

HL-DT-ST DVD-ROM DH20N [Optical drive]
Optiarc DVD+-RW AD-7230S [Optical drive]

SAMSUNG HD103SJ [Hard drive] (1000.20 GB) -- drive 0, s/n S26BJDWZ101538, rev 1AJ10001, SMART Status: Healthy

9208 Megabytes Usable Installed Memory

Slot 'DIMM0' has 2048 MB (serial number 4F300B18)
Slot 'DIMM1' has 1024 MB (serial number 92BC0E22)
Slot 'DIMM2' has 2048 MB (serial number 912F72D2)
Slot 'DIMM3' has 1024 MB (serial number 94BC0E22)
Slot 'DIMM4' has 2048 MB (serial number 4E300ADD)
Slot 'DIMM5' has 1024 MB (serial number A6BC0E22)

NVIDIA GeForce GTS 240 [Display adapter]
DELL S2209W [Monitor] (21.7"vis, s/n XX-0N764H-XXXXX-96Q-07NU, June 2009)

 

Maybe a power supply problem? Drawing most power at boot, and unable to cope with that. Once it gets going, though, no more trouble.
You might check all your connections, too - power point, power cable, and anything else. Check the same with the monitor, too.

 

I get system service exception, irql equal or not equal, memory management, a few others I think. I'm paraphrasing but I can post more specifically the next time I turn it on when I get home today. I'll take the computers power cord and move it from the surge protector and plug it straight into the wall and see if it works. My apartment is older and the electricity is 10 amp rather than 15 amp like it ought to be but it doesn't cause problems on my girlfriends computer.

 

I would also run chkdsk /f and/or a program such as Disk Doctor which is in the "toolbox" section of Advanced System Care.

Random BSODs can sometimes be a sign of a hard disk issue.

 

just an update, i ran memtest without taking out any ram. the test went a couple minute before coming up with a bunch of errors and stopping. tried it again with the fail safe mode and it did the same. tried it with multithreading and it went a whole pass without showing any errors and i just stopped it. ill try taking out some ram and running it again to see what happens. ill also run chkdisk but ive done it before with no errors so i doubt thats the issue. another blue screen error i get is bad pool header. i dont know why theres so many different errors

 

is there anything i should know about which sticks to take out? do i just take them out and turn it back on? sorry i just get nervous about tinkering with things

 

so i took out the 1gb sticks and ran memtest. it went a full pass and then some with no errors, then my power management settings put my monitor to sleep. i put the sticks back in where they were then took out the 2 gb sticks and turned it on. the system powered on but didnt boot or even bring up the dell boot screen. it just repeated a double beep til i shut it off again. not sure if that means the problem are those 1 gb sticks or if i shouldve put the 2 gb sticks where the 1 gb ones were or what.

 

gotcha. ill take out the 2 gb sticks and move the 1 gb sticks to the blue slots as soon as i get a chance. might be a few days before i post results as ive been quite busy lately. thanks for the help so far, its truly appreciated