Last night while playing a game on my late 2009 27” iMac it froze up and had snow (large asterisks) all over screen. I rebooted and lasted about 5 mins and same thing. From then On I couldn’t reboot except into safe mode. While booting I have 5 wide (3/4’) pink vertical lines on a white/grey background that continue on into safe mode. If I don’t do safe mode it gets 2/3rds into progress bar and I get snow and frozen. I have hooked up external monitor and has same lines. Can’t boot into Diagnostic mode, freezes. Haven’t tried any other modes.
Last night while playing a game on my late 2009 27” iMac it froze up and had snow (large asterisks) all over screen. I rebooted and lasted about 5 mins and same thing. From then On I couldn’t reboot except into safe mode. While booting I have 5 wide (3/4’) pink vertical lines on a white/grey background that continue on into safe mode. If I don’t do safe mode it gets 2/3rds into progress bar and I get snow and frozen. I have hooked up external monitor and has same lines. Can’t boot into Diagnostic mode, freezes. Haven’t tried any other modes.
Here are the specs
'''Hardware Overview:'''
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Model Name: iMac
Model Identifier: iMac11,1
Processor Name: Intel Core i5
Processor Speed: 2.66 GHz
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Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 4 GB
Boot ROM Version: IM111.0039.B00
SMC Version (system): 1.54f36
Serial Number (system): QP0150AJ5PJ
Hardware UUID: 1ABC6407-0C0D-56EB-9EA6-E6DDF6327AA7
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'''ATI Radeon HD 4850:'''
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Chipset Model: ATI Radeon HD 4850
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Dynamic, Max): 512 MB
Vendor: AMD (0x1002)
Device ID: 0x944a
Revision ID: 0x0000
ROM Revision: 113-B9110C-425
VBIOS Version: 113-B91101-009
EFI Driver Version: 01.00.383
Displays:
'''iMac:'''
Display Type: LCD
Resolution: 2560 x 1440 (QHD/WQHD - Wide Quad High Definition)
UI Looks like: 2560 x 1440
Framebuffer Depth: 24-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Automatically Adjust Brightness: No
Connection Type: DisplayPort
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Last night while playing a game on my late 2009 27” iMac it froze up and had snow (large asterisks) all over screen. I rebooted and lasted about 5 mins and same thing. From then On I couldn’t reboot except into safe mode. While booting I have 5 wide (3/4’) pink vertical lines on a white/grey background that continue on into safe mode. If I don’t do safe mode it gets 2/3rds into progress bar and I get snow and frozen. I have hooked up external monitor and has same lines. Can’t boot into Diagnostic mode, freezes. Haven’t tried any other modes.
Here are the specs
'''Hardware Overview:'''
[br]
Model Name: iMac
Model Identifier: iMac11,1
Processor Name: Intel Core i5
Processor Speed: 2.66 GHz
[br]
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 4 GB
Boot ROM Version: IM111.0039.B00
SMC Version (system): 1.54f36
Serial Number (system): QP0150AJ5PJ
Hardware UUID: 1ABC6407-0C0D-56EB-9EA6-E6DDF6327AA7
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'''ATI Radeon HD 4850:'''
[br]
Chipset Model: ATI Radeon HD 4850
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Dynamic, Max): 512 MB
Vendor: AMD (0x1002)
Device ID: 0x944a
Revision ID: 0x0000
ROM Revision: 113-B9110C-425
VBIOS Version: 113-B91101-009
EFI Driver Version: 01.00.383
Displays:
'''iMac:'''
Display Type: LCD
Resolution: 2560 x 1440 (QHD/WQHD - Wide Quad High Definition)
UI Looks like: 2560 x 1440
Framebuffer Depth: 24-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Automatically Adjust Brightness: No
Connection Type: DisplayPort
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Last night while playing a game on my late 2009 27” iMac it froze up and had snow (large asterisks) all over screen. I rebooted and lasted about 5 mins and same thing. From then On I couldn’t reboot except into safe mode. While booting I have 5 wide (3/4’) pink vertical lines on a white/grey background that continue on into safe mode. If I don’t do safe mode it gets 2/3rds into progress bar and I get snow and frozen. I have hooked up external monitor and has same lines. Can’t boot into Diagnostic mode, freezes. Haven’t tried any other modes.
Here are the specs
'''Hardware Overview:'''
[br]
Model Name: iMac
Model Identifier: iMac11,1
Processor Name: Intel Core i5
Processor Speed: 2.66 GHz
[br]
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 4 GB
Boot ROM Version: IM111.0039.B00
SMC Version (system): 1.54f36
Serial Number (system): QP0150AJ5PJ
Hardware UUID: 1ABC6407-0C0D-56EB-9EA6-E6DDF6327AA7
[br]
[br]
'''ATI Radeon HD 4850:'''
[br]
Chipset Model: ATI Radeon HD 4850
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Dynamic, Max): 512 MB
Vendor: AMD (0x1002)
Device ID: 0x944a
Revision ID: 0x0000
ROM Revision: 113-B9110C-425
VBIOS Version: 113-B91101-009
EFI Driver Version: 01.00.383
Displays:
'''iMac:'''
Display Type: LCD
Resolution: 2560 x 1440 (QHD/WQHD - Wide Quad High Definition)
UI Looks like: 2560 x 1440
Framebuffer Depth: 24-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Automatically Adjust Brightness: No
Connection Type: DisplayPort
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