Black screen while playing games

Shut down the computer, when you can, open it up and clean it out with a can of compressed air from your local computer shop.

Too high of temps can cause permanent damage.
 

My Computer My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
76~2.0
OS
Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
CPU
Intel Core i5-3570K 4.6GHz
Motherboard
Gigabyte GA-Z77X UD3H, f18
Memory
8GB (2X4GB) DDR3 1600 Corsair Vengeance CL8 1.5v
Graphics Card(s)
Sapphire HD 7770 Vapor-X OC 1GB DDR5
Sound Card
Onboard VIA VT2021
Monitor(s) Displays
22" LCD Dell
Screen Resolution
1680x1050
Hard Drives
Samsung 840Pro 128GB SSD,
Seagate Barracuda 500GB SATA2 7200rpm 32MB cache, Seagate Barracuda 1TB SATA2 7200rpm 32MB cache,
PSU
Corsair HX650W
Case
Cooler Master Storm Scout
Cooling
Corsair H80 2x12cm Noctua NF P12 , 2x14cm case fans
Keyboard
Logitech Wave
Mouse
CM Sentinel
Internet Speed
Dismal
Antivirus
Avast
Browser
Opera Next
Other Info
Haswell laptop: HP Envy 17t-j, i7-4700MQ, GeForce 740M 2GB DDR3, 17.3" Full HD 1920x1080, 16GB RAM, Samsung 840 Pro 128GB, 1TB Hitachi 7200 HDD,
Desktop: eSATA ports,
External eSATA Seagate 500GB SATA2 7200rpm,
External WD USB 500GB
I have already done that.
 

My Computer My Computer

OS
Windows 7 Home Premium 64-bit
CPU
Fujitsu
Memory
4,00 GB
Graphics Card(s)
NVIDIA Geforce GT220
Monitor(s) Displays
LG Flatron W2253TQ
Hard Drives
System (C:)
Data (D:)
Yes! It seems to be working, we applied MX-4 to both graphics card and proccesor, i cleaned out all fans with compressed air and i put my computer on top of some wood chumps to keep the air ventaliton circuling.
All this together have seem to make it both more lag-free and no blackscreening!
Thank you so much, for both of you guys help.
 

My Computer My Computer

OS
Windows 7 Home Premium 64-bit
CPU
Fujitsu
Memory
4,00 GB
Graphics Card(s)
NVIDIA Geforce GT220
Monitor(s) Displays
LG Flatron W2253TQ
Hard Drives
System (C:)
Data (D:)
Glad to hear it's running better.

Let us know if you have any further issues.
 

My Computer My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
76~2.0
OS
Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
CPU
Intel Core i5-3570K 4.6GHz
Motherboard
Gigabyte GA-Z77X UD3H, f18
Memory
8GB (2X4GB) DDR3 1600 Corsair Vengeance CL8 1.5v
Graphics Card(s)
Sapphire HD 7770 Vapor-X OC 1GB DDR5
Sound Card
Onboard VIA VT2021
Monitor(s) Displays
22" LCD Dell
Screen Resolution
1680x1050
Hard Drives
Samsung 840Pro 128GB SSD,
Seagate Barracuda 500GB SATA2 7200rpm 32MB cache, Seagate Barracuda 1TB SATA2 7200rpm 32MB cache,
PSU
Corsair HX650W
Case
Cooler Master Storm Scout
Cooling
Corsair H80 2x12cm Noctua NF P12 , 2x14cm case fans
Keyboard
Logitech Wave
Mouse
CM Sentinel
Internet Speed
Dismal
Antivirus
Avast
Browser
Opera Next
Other Info
Haswell laptop: HP Envy 17t-j, i7-4700MQ, GeForce 740M 2GB DDR3, 17.3" Full HD 1920x1080, 16GB RAM, Samsung 840 Pro 128GB, 1TB Hitachi 7200 HDD,
Desktop: eSATA ports,
External eSATA Seagate 500GB SATA2 7200rpm,
External WD USB 500GB
Yeah, i will. :)
 

My Computer My Computer

OS
Windows 7 Home Premium 64-bit
CPU
Fujitsu
Memory
4,00 GB
Graphics Card(s)
NVIDIA Geforce GT220
Monitor(s) Displays
LG Flatron W2253TQ
Hard Drives
System (C:)
Data (D:)
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