Question about Intel Motherboard

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A: drive When I power on the A: drive "light" just stays on even though CMOS is set to boot A: to c:. nO DISK IN A: so it should proceed to C: to look for OS. No it keeps scanning A:????

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  • Ae-J Jun 02, 2008

    i was unable to access my cmos..powering on the pc results in displaying an error saying "error reading drive a media.INSERT SYSTEM DISK AND PRESS ENTER!"

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3 Answers

1- Turn off the computer and unplug the power cord.
2- remove the onboard battery
3- move the jumper cap from pins 1-2 (default) to pin 2-3. keep the cap on pins 2-3 for about 5 -> 10 seconds, then move the cap back to pin 1-2.
4- re-install the battery.
5- plug the power cord and turn On the computer.6- hold down the DEL key during the boot process and enter BIOS steup to re-enter data.

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Aymane - Morocco

Posted on Nov 06, 2007

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Hi, you may have connected the floppy drive cable in the reverse way. just change the cable to the right way and check it out or change the fdd cable

Posted on Sep 27, 2007

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Get into the bios F2 or Del on boot up and change the first boot device to cdrom and 2nd to HDD then last the 'a' drive. The floppy drive may be faulty, if you dont use it just disconnect it.

Posted on Sep 26, 2007

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Laptop not working. says disk read error occurred. tried ctrl+alt+delete but saus phoenix secure core (tm) set up itility and enter pass word. I dont know the psss word.


What you have seems top be one of two issues, plus the password problem. Either the hard drive has malfunctioned in the laptop and the OS cannot read the disk to boot up, or possibly the BIOS/CMOS has "forgotten" where the boot device is. This can happen if there is a low CMOS battery event. In either case the laptop will revert to the BIOS/CMOS to allow the user to check settings and determine if the hard drive is being detected by the system. Unfortunately, it appears that someone has placed a BIOS password on your machine. These are not easy to get around. The only sure way to remove it is to disconnect the power cord, remove the battery, access the interior of the laptop, and remove (or unplug) the CMOS battery. Once you have done that, press and release the POWER ON button several times. This will discharge all power in the CMOS circuit and the CMOS will reset to factory defaults (no password). Then plug in or reinsert the CMOS battery, close the case, replace the battery and plug in the device and restart the system. You should then be able to access the CMOS. If the CMOS detects the hard drive on the main page, check the boot device and boot sequence menus to be sure that the HDD is the first device for bootup. If the HDD is not detected, or if the HDD is detected and all settings are correct and you still cannot boot to the drive due to the read error, you may need to replace the hard drive. If you have the recovery disc or an original OS install disk, you may be able to boot to it and attempt a repair install, where the system will try to fix whatever happened to the OS. If there is simply a corrupt file, the repair install may fix the issue, If the error in a physical one in the system area of the hard drive, you may be out of luck.

Nov 02, 2016 | Computers & Internet

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Unit starts/stops-starts/stops after replacing 3v battery?


When you say starts/stops (etc) are you saying it just keeps trying to reboot? Or are you getting a message such as boot disk not found press any key to restart? Replacing the 3V battery will cause the CMOS to reset to factory defaults. You may need to go into the CMOS and make setting changes to point to the proper disk drive for booting. You may even have to change the type of disc drive since there is now the old MBR as well as the newer GPT format. Also, there is the possibility that if you are upgrading you may need to use the legacy CMOS instead of the UEFI that many newer mainboards come defaulted to. Any error in the CMOS settings can cause a boot failure.

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System will not boot. lights come on, disk light on for two seconds then stops. Other lights stay on. This is the same when just AC adapter is being used. Tried reseating and testing RAM. It will try...


Take out dvd-rw drive, wifi card, hdd and check usb ports for bent pins. Try booting to cmos with old memory. If this doesn't work, try new memory and cmos boot. If laptop boots to cmos, motherboard is probably okay. If not you may have MB problem. If it boots to cmos, add removed items back one at a time.

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Toshiba Satellite L355D-S7815 re-soldered cmos battery onto mother board and re-set the bios, now I have the f2 and f12 option available, tried to boot cd/dvd drive with windows 8 disk and it will not


Go into the BIOS setting abd check it the BIOS detects the hard disk and CD/DVD drive.
If it detects these drives then go to the boot device order and select the CD as the first boot device then the hard disk as the 2nd boot device.

Apr 03, 2013 | Computers & Internet

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After replacing on board lithium cell, computer will not boot up. Goes through BIOS ok but no further, even tried replacing hard disk and booting from removable media drives (after setting BIOS...


Did you swap the Cmos jumpers from 1-2 to 2-3 to clear Cmos before replacing battery and if so, did you return them to their original position (normal as opposed to clear cmos)? If the jumper is still in the clear Cmos position, the board will not boot.

Try changing the Cmos battery, it may appear to work but may not be suited to the board

Disconnect all drives except the hard drive, unplug usb and sound cables, if fitted, remove graphics card and either test with another one or use the onboard graphics.

Jan 11, 2011 | ASUS A7V333 Motherboard

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I just added Toshiba 1TB USB drive to my Sony RZ44G desktop. Sometimes when powering off and back on, the reboot hangs at the 'SONY' screen and gets no further. If I disconnect the Toshiba drive, power off...


Check your bios/cmos settings (press DEL button while booting), and make sure no USB device is set to boot frome.
(some bios's recognise large USB's as harddisk's drives, and when booting it check's the drive boot sector, and hang, since no boot sector is located in it)

gd luck.

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HP Pavilion z1420n won't even boot into CMOS


Unplug the hard drive power and cable.

Boot. See what happens.

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1 Answer

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.

Oct 19, 2008 | Computers & Internet

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