Flashing screen

I am getting a random flashing and i am wondering if it is because my graphics card is not getting the power it needs. I have a new 'EVGA GeForce GTX 560 Ti Superclocked 1024MB GDDR5 PCI-Express 2.0 Graphics Card. I needs a minimum 500 watts PSU. I have a Rocketfish 500 PSU but maybe it's failing? This is a new problem ..everything was fine until recently. Any ideas?? Here are the specs of my PC :1. AMD Phenom X4 9750 2.4 GHz (HD9750XAJ4BGH) Processor

2. Win 7 Premium 64 Bit O.S Upgrade (also comes with Windows XP). Both include the COA. Windows 7 also includes the 32 bit version and 64 bit version. The 64 bit is installed.

3. 4 Gig Memory

4. Hard drive is 1 TB


6. MSI - K9N6PGM2-V2 Motherboard (Drivers CD Included

7. New Keyboard and Mouse

8. Video Card: EVGA GeForce GTX 560 Ti Superclocked 1024MB GDDR5 PCI-Express 2.0

9. Rocketfish 500-Watt Power Supply 600w peak RF500WPS2

Specs are:

Memory: 2 x 2GB

PNY MD2048SD2-800 2GB PC2-6400 800 MHz DDR2 Desktop DIMM Memory

--------Motherboard Specs:

Detailed item info
Product Information
Functions designed with button to be easy use Help power-users tweaking process in-chassis environment Onboard SATA ports are stacked on the mainboard to avoid mechanical issue with giant graphic cards like 8800 Ultra AMD Cool'n'Quiet technology

Product Identifiers
Key Features
Product Type
Form Factor
Micro ATX
24.4 cm
20 cm
CPU Type
Athlon, Athlon II X2, Athlon II X3, Athlon II X4, Athlon X2, Phenom II X2, Phenom II X3, Phenom II X4, Phenom X3, Phenom X4, Sempron
64-bit Processors Compatibility
CPU Socket Type
Socket AM2+
Multi-Core Support
Dual-Core / Triple-core / Quad-core
Chipset Type
NVIDIA GeForce 6150 SE
Data Bus Speed
1000 MHz
Storage Controllers
ATA-133, Serial ATA-300 (RAID)
Power Connectors
24-pin main power connector, 4-pin ATX12V connector
Installed Qty (Max Supported)
0 ( 1 )
RAM Installed / Max
0 MB / 8 GB (max)
Supported RAM Speed
PC2-5300, PC2-6400
RAM Features
dual channel memory architecture
Graphics Controller
NVIDIA GeForce 6150 SE shared video memory (UMA)
Audio Output Type
Sound card
Compliant Standards
High Definition Audio
Telecom / Networking
Modem Type
Networking Type
Network adapter
Network adapter - Realtek RTL8201EL - Ethernet, Fast Ethernet
Hardware Features
AMD Cool 'n' Quiet Technology, Chassis intrusion detection, audio jack detect technology
Expansion / Connectivity
Storage Interfaces
ATA-133 - connector(s): 1 x 40pin IDC - 2 device(s), Serial ATA-300 - connector(s): 2 x 7pin Serial ATA - 2 device(s) - RAID 0 / RAID 1
1 x audio - line-in - 4 pin MPC, 1 x display / video - VGA - 15 pin HD D-Sub (HD-15), 1 x keyboard - generic - 6 pin mini-DIN (PS/2 style), 1 x mouse - generic - 6 pin mini-DIN (PS/2 style), 1 x network - Ethernet 10Base-T/100Base-TX - RJ-45, 1 x serial - RS-232 - 9 pin D-Sub (DB-9), 1 x storage - floppy interface - 34 pin IDC, 3 x audio, 4 x Hi-Speed USB - 4 pin USB Type A
Additional Connectors
4 x Hi-Speed USB

----------Here is my monitor information too : Product Identifiers
Brand Samsung
Model SyncMaster P2770FH
UPC 0729507815527, 729507815527, 8806071052571
Additional MPN LS27EFHKUF/ZA

Key Features
Display Technology LCD
Screen Size 27"
Maximum Resolution 1920 x 1080
Contrast Ratio 1000:1
Response Time 1 ms
3 answers Last reply
More about flashing screen
  1. Welcome to Tom's,
    In the future please don't post entire mobo specs, just link to the mobo or give it's model number.

    I have some more questions:

    Flashing as in the screen goes black momentarily? how often?

    -are both 6 pin power cables plugged into the gpu?
    -how long has this been happening? how old is it?
    -have you tried switching the video ports? (also make sure everything is fitting securely)
    -what are your temps?
    -which rocketfish psu? Do you have any other PSUs around that you could test with?
  2. ok ..sorry 'bout posting all the specs. I went ahead and installed a new 850 watt PSU and it took care of the flashing. I have a different problem now. My pc crashed and now the new graphics card wont start. Windows is booting up but i get nothing on the screen. I am about to try hooking up to the on board card . Not sure what to do after that though. I wonder if my old problem has anything to do with this problem.
    I will check all connections and find out what my temps are if i can. Thanks for responding.
  3. by "windows is booting up" do you mean you only see the window logo before it goes black? If you don't see any logo, how do you know windows is booting? Does the screen display post/bios info?
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