At a few years old these will start giving what we call "a bag of BSODs." The usual cause is not always the same but can include lack of cleaning (heatsinks, vents), malware, banged up OS, HDD or RAM errors and other.
What I like to do is to go ahead and get the cleaning done first. Remember only your newer techs balk at this or shout it's not heat. This is something that takes just a few minutes with the canned air and then you retest. While cleaning you check the heatsinks are on solid and leave the cover off for the test where you give the fans a spot check. They must work like new.
After that you check out the age of the machine and possibly replace all heatsink compounds even on GPU and bridge chips. Then retest.
If that did not change the results you look over the Web Speccy (how at https://www.piriform.com/docs/speccy/using-speccy/publishing-a-speccy-profile-to-the-web ) and if that's clean head for a clean OS install.
So this computer has had issues for a long time, like a year or more. It gets lots of blue screens, crashes, freezes, and often boot loops when trying to restart after crashing. It'll power on, beep once, fan is going, then stop, then repeat until it eventually makes it through. I've updated all drivers and updated BIOS as recommended by Dell a while ago, but that didn't fix the problems. I've factory restored it twice, which seems to kind of make the blue screens happen less frequently for a time...
Now it gets a lot of visual glitches when it freezes. Almost always when loading into a game (like league of legends), it'll freeze with particles all over the screen, the image jumping around and flashing, etc. So I'm not sure if this is a graphics card issue.
I've been planning on just building a new computer... but if I can buy a piece of hardware that'll fix this thing up, I'll do it. I just don't know what will fix it. I'm not great with computers, but have tried many fixes just by scouring other forums and videos and looking up solutions to the blue screens that I've gotten. Maybe the motherboard is bad? I just wish I knew what piece had a problem so I could fix that piece. Surely the graphics card, but that might not be the only issue.
Here is a list of all of the blue screens I've seen:
Page fault in nonpaged area
System service exception
Kmode exception not handled
NTFS file system (ntfs.sys)
Driver IRQL not less or equal
Bad pool caller
Bad pool header
Unexpected kernal mode trap
Timer or DPC invalid
System thread exception not handled
Kernel security check failure
Attempted write to readonly memory
I don't have anything saved on this computer, I'm just trying to resolve the problems it has, or to learn what the problem even is.
Here are the list of components
210-AANM : Alienware X51: Standard Base
370-AAMQ : 16GB Dual Channel DDR3 at 1600 Mhz (2x8GB)
580-AAOJ : Alienware Standard USB 2.0 Key board (English)
490-BBPI : AMD Radeon R9 270 with 2GB GDD R5
400-AALK : 2TB (64MB Cache) 7200 RPM SATA 6Gb/s
321-BBIY : Matte Stealth Black with Dark Chrome Accents
619-ADTB : Windows 8.1 (64Bit) English
340-AIXK : Resource DVD windows 8.1
340-ACGV : Placemat
338-BCBX : 4th Generation Intel(R) Core(T M) i7-4770 Processor (8MB Cach e, up to 3.9GHz with Turbo Boo st Technology)
340-ACGW : Ship Material
570-AACL : Alienware USB Optical Mouse
429-AANL : Slot-Loading Dual Layer DVD Bu rner (9.5mm)
555-BBKI : Dell Wireless 1550 (2x2 11ac c ombo with Bluetooth)
450-AAGO : US Power Cord
340-AARJ : English Documentation DAO
450-AARV : Alienware 330 Watt Power Suppl y
620-AASU : Windows 8.1 DVD OS Recovery(En glish)
I have not changed any of the inside parts. I now use a Razer chroma keyboard and a corsair mouse... Diagnostics tests that I've done haven't detected problems. Let me know any steps to take, information to provide, etc, and I will gladly do so.