Question about HP Pavilion 8860 (P2941A) PC Desktop

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Blank screen i have power the disk drives open and close its reading the mouse but not the keyboard if i unplug the monitor it turns in and says no signal detected when i plug it in the screen goes blank and the light goes from green to yellow

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  • Agugua  Lims
    Agugua Lims May 11, 2010

    the problem might be from the cable of yr monitor so try using a diff monitor for yr system if it works then yr cable may be bad or possible the monitor itself. its possible

  • Jonathan
    Jonathan Apr 09, 2014

    I'm having a similar problem where I plug the computer into the wall, it turns on, it shows me the startup, but after the windows logo, the monitor goes into standby and displays no image. I get a message saying that there is no source detected.

  • Christophe Thompson
    Christophe Thompson Apr 09, 2014

    Video card went out on ya its mother board video card it means attached to mother board or your screen finnally took a dump these are majors in screen going yellow on the button

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  • Master
  • 1,224 Answers

Was it working before
check all your cables and lines make sure a pet didnt get behind there also if you have kids make sure they didnt put liquid into your comp

cause if it was sounds like you got hit by a virus that effects all major compartments of comp

green to yellow is standby mode

Posted on May 30, 2008

  • 2 more comments 
  • Jonathan
    Jonathan Apr 09, 2014

    I'm having a similar problem where I plug the computer into the wall, it turns on, it shows me the startup, but after the windows logo, the monitor goes into standby and displays no image. I get a message saying that there is no source detected.

  • Christophe Thompson
    Christophe Thompson Apr 09, 2014

    Do a safe mode reboot and do a restore from a week ago then once working down load for free kapersky virus scanner you been hit by a video bug safemode is f8 or run from disk

  • Jonathan
    Jonathan Apr 23, 2014

    I found out the problem... no virus, I just had to find a video displaying device that had a s-cable connection.

  • Christophe Thompson
    Christophe Thompson Apr 23, 2014

    The S cable shouldnt effect functions of comp it should improve it your video card was not updated from the sounds of old software

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Trubleshoot Motherboard


More than 70% of all computer problems are related to cabling and connections. Ensure all cables are connected and connected firmly. IDE and floppy ribbon cables and power cables can often go loose. Ensure microprocessor, memory modules, and adapters such as video card are inserted correctly and didn't "pop-up" due to vibration.
System has no power at all. Power light does not illuminate, fan inside the power supply does not turn on, and indicator light on keyboard does not turn on. PROBABLE CAUSE DIAGNOSIS SOLUTION
Power cable is unplugged. Visually inspect power cable. Make sure power cable is securely plugged in.
Defective power cable. Visual inspection, try another cable. Replace cable.
Power supply failure. Power cable and wall socket are OK, but system is still dead. Contact technical support
Faulty wall outlet;circuit breaker or fuse blown. Plug device into socket know to work and test. Use different socket, repair outlet, reset circuit breaker or replace fuse.



System inoperative. Keyboard lights are on, power indicator lights are lit, and hard drive is spinning. PROBABLE CAUSE DIAGNOSIS SOLUTION
Expansion card is partially dislodged from expansion slot on the motherboard. Turn off computer. Take cover off system unit.
Check all expansion cards to ensure they are securely seated in slots. Using even pressure on both ends of the expansion card, press down firmly on expansion card.
Defective floppy disk drive or tape drive. Turn system off.
Disconnect the cables from one of the floppy drives. Turn on the system, check to see if the keyboard operates normally. Repeat until you have located defective unit. Contact Technical Support.
Defective expansion card. Turn computer off.
Remove an expansion card. Make sure expansion card is secure in expansion socket.



System does not boot from hard disk drive, can be booted from floppy disk drive. PROBABLE CAUSE DIAGNOSIS SOLUTION
Connector between hard drive and system board unplugged. When attempting to run the FDISK utility described in the HARD DISK section of the manual you get a message, INVALID DRIVE SPECIFICATION. Check cable running form disk to disk controller on the board. Make sure both ends are securely plugged in; check the drive type in the Standard CMOS Setup (in your motherboard manual).
Damaged Hard Disk or Disk Controller. Format hard disk; if unable to do so, the hard disk may be defective. Contact Technical Support.
Hard Disk directory or FAT is scrambled. Run the FDISK program, format the hard drive(See HARD DRIVE section of manual). Copy your backup data back onto hard drive. Backing up the hard drive is extremely important. All Hard Disks are capable of breaking down at any time.



System only boots from Floppy Disk. Hard Disk can be read and applications can be used, but booting from Hard Disk is impossible. PROBABLE CAUSE DIAGNOSIS SOLUTION
Hard Disk boot program has been destroyed. A number of causes could be behind this. Back up data and applications files.
Reformat the Hard Drive as described in the Hard Drive section of the manual. Re-install applications and data using backup disks.



Error message reading "SECTOR NOT FOUND" or other error messages indication certain data is not allowed to be retrieved. PROBABLE CAUSE DIAGNOSIS SOLUTION
A number of causes could be behind this. Use a file by file backup instead of an image backup to backup the Hard Disk. Back up any salvageable data. Then do a low level format, partition, and high level format of the hard drive( see Hard Disk section of your manual for instructions). Re-install all saved data when completed.



Disk formatted on IBM PS/2 will not operate with this system. PROBABLE CAUSE DIAGNOSIS SOLUTION
The IBM PS/2 uses a different format than other computers. IBM PS/2 disk format will not work in an AT type computer. Format disk in the AT type computer insert disk into the IBM PS/2 and copy the files you wish.



After install an expansion card (network card, tape drive card, etc.) the system no longer works properly. PROBABLE CAUSE DIAGNOSIS SOLUTION
No power to monitor. All or part of the system may be inoperable. The new card may work but a mouse or COM port may not work. Change the interrupt or RAM address on the new expansion card. See the documentation that came with the new card in order to change pin settings. many expansion devices come with proprietary software that will assist you in doing this.



Screen message says "Invalid Configuration" or "CMOS Failure." PROBABLE CAUSE DIAGNOSIS SOLUTION
Incorrect information entered into the configuration (setup) program. Check the configuration program. Replace any incorrect information. Review system's equipment. Make sure correct information is in setup.



Screen is blank. PROBABLE CAUSE DIAGNOSIS SOLUTION
No power to monitor. Power connectors may be loose or not plugged in. Check the power connectors to monitor and to system. Make sure monitor is connected to display card, change I/O address on network card if applicable.
Monitor not connected to computer. See instructions above.
Network card I/O address conflict. See instructions above.



System does not boot from hard disk drive, can be booted from floppy disk drive. PROBABLE CAUSE DIAGNOSIS SOLUTION
Connector between hard drive and system board unplugged. When attempting to run the FDISK utility described in the HARD DISK section of the manual you get a message, INVALID DRIVE SPECIFICATION. Check cable running form disk to disk controller on the board. Make sure both ends are securely plugged in; check the drive type in the Standard CMOS Setup (in your



Problem PROBABLE CAUSE DIAGNOSIS SOLUTION
Memory problem, display card jumpers not set correctly. Reboot computer. Re-install memory, make sure that all memory modules are installed in correct sockets. Check jumper and switch settings on display card. See display card section for information of settings.
Computer virus. Use anti-virus programs (McAfee/PC-cillin, E-port, etc) to detect and clean viruses.



Screen goes blank periodically. PROBABLE CAUSE DIAGNOSIS SOLUTION
Screen saver is enabled. Disable screen saver.



Keyboard failure. PROBABLE CAUSE DIAGNOSIS SOLUTION
Keyboard is disconnected. Reconnect keyboard. Check keys again, if no improvement, replace keyboard.



No color on screen. PROBABLE CAUSE DIAGNOSIS SOLUTION
Faulty Monitor. If possible, connect monitor to another system. If no color, replace monitor.
CMOS incorrectly set up. Call technical support.



Floppy drive lights stays on. PROBABLE CAUSE DIAGNOSIS SOLUTION
Floppy Drive cable not connected correctly. Reconnect floppy cable making sure PIN1 on the Floppy Drive corresponds with PIN1 on floppy cable connector.



Error reading drive A: PROBABLE CAUSE DIAGNOSIS SOLUTION
Bad floppy disk. Try new floppy disk.
Floppy disk not formatted Format floppy disk(type ENTER)



C: drive failure. PROBABLE CAUSE DIAGNOSIS SOLUTION
SETUP program does not have correct information. Boot from drive A: using DOS system disk. Input correct information to SETUP program.
Hard Drive cable not connected properly. Check Hard drive cable.



Cannot boot system after installing second hard drive. PROBABLE CAUSE DIAGNOSIS SOLUTION
Master/Slave jumpers not set correctly. Set master /Slave jumpers correctly.
Hard Drives not compatible / different manufacturers. Run SETUP program and select correct drive types. Call drive manufactures for compatibility with other drives.



Missing operating system on hard drive. PROBABLE CAUSE DIAGNOSIS SOLUTION
CMOS setup has been changed. Run setup and select correct drive type.



Certain keys do not function. PROBABLE CAUSE DIAGNOSIS SOLUTION
Keys jammed or defective. Replace keyboard.



Keyboard is locked, no keys function. PROBABLE CAUSE DIAGNOSIS SOLUTION
Keyboard is locked. Unlock keyboard



If a problem persists, please search for a solution or post a question in our tech support forum in our Help Desk.

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1 Answer

Blank screen and no lights on keyboard and mouse


*check the power cables

*check the power outlet

*check smps is fine

*check power switches are properly connected

*check in bios hdd is enabled

*open the case wheather the connections are properly connected

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