Imac crash beeping & loud fans

Does anybody know why my computer crashed so hard that I had to unplug it for 10 mins before I could restart it so it would not beep and have the fans spin at full blast?
Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x00000000048E9000 PC=0x00000000008E0D20
Latest crash info for cpu 0:
Exception state (sv=0x45036A00)
PC=0x008E0D20; MSR=0x00009030; DAR=0x048E9000; DSISR=0x40000000; LR=0x008E0DEC; R1=0x2C973B20; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x008E0DEC 0x008EF808 0x008EF58C 0x008E3A88 0x002E9A80 0x002EB94C
0x0008C248 0x00029234 0x000233F8 0x000ABEAC 0x03290B00
backtrace terminated - frame not mapped or invalid: 0xBFFFE900
Kernel loadable modules in backtrace (with dependencies):
com.apple.GeForce(4.1.8)@0x8d8000
dependency: com.apple.iokit.IOPCIFamily(1.7)@0x48d000
dependency: com.apple.iokit.IOGraphicsFamily(1.4.2)@0x5d1000
dependency: com.apple.iokit.IONDRVSupport(1.4.2)@0x5f5000
dependency: com.apple.NVDAResman(4.1.8)@0x60b000
Proceeding back via exception chain:
Exception state (sv=0x45036A00)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x4507EC80)
PC=0x9000AF48; MSR=0x0000F030; DAR=0x22283000; DSISR=0x42000000; LR=0x9000AE9C; R1=0xBFFFE900; XCP=0x00000030 (0xC00 - System call)
Kernel version:
Darwin Kernel Version 8.11.0: Wed Oct 10 18:26:00 PDT 2007; root:xnu-792.24.17~1/RELEASE_PPC
panic(cpu 0 caller 0xFFFF0003): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x000954F8 0x00095A10 0x00026898 0x000A8204 0x000ABB80
Proceeding back via exception chain:
Exception state (sv=0x45036A00)
PC=0x008E0D20; MSR=0x00009030; DAR=0x048E9000; DSISR=0x40000000; LR=0x008E0DEC; R1=0x2C973B20; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x008E0DEC 0x008EF808 0x008EF58C 0x008E3A88 0x002E9A80 0x002EB94C
0x0008C248 0x00029234 0x000233F8 0x000ABEAC 0x03290B00
backtrace terminated - frame not mapped or invalid: 0xBFFFE900
Kernel loadable modules in backtrace (with dependencies):
com.apple.GeForce(4.1.8)@0x8d8000
dependency: com.apple.iokit.IOPCIFamily(1.7)@0x48d000
dependency: com.apple.iokit.IOGraphicsFamily(1.4.2)@0x5d1000
dependency: com.apple.iokit.IONDRVSupport(1.4.2)@0x5f5000
dependency: com.apple.NVDAResman(4.1.8)@0x60b000
Exception state (sv=0x4507EC80)
PC=0p

Try working without the new RAM, then replace it and run Rember to check it.

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