JoeMorgan

I came home today and I turned on my computer and nothing happened, my computer was in fully working order this morning, and the power cable is fully inserted. What do I do?
Joe

greenbrucelee

how about telling us the specs of your computer?

we can't diangnose a problem without an idea of the equipment you have

JoeMorgan

sorry, this is off the dell website, there is alot of irrelevant data, I don't know what you need though, i also have installed and inserted a radeon sapphire HD 3650 graphics card.



Microprocessor

Microprocessor type

Intel® Xeon™

Level 1 (L1) cache

8 KB

Level 2 (L2) cache

512-KB

Memory

Type

PC2100 DDR

Memory connectors

four

Memory capacities

256-, 512-MB, and 1-GB non-ECC or ECC

Minimum memory

256 MB

Maximum memory

4 GB

BIOS address

F0000h

Computer Information

Chip set

Intel E7505

Data bus width

64 bits

Address bus width

32 bits

DMA channels

8

Interrupt levels

23

BIOS chip

4-Mb

Memory speed

266 MHz DDR (PC 2100 DDR)

NIC

Gigabit integrated network interface with ASF support as defined by DMTF

Capable of 10/100/1000 communication

Green — A good connection exists between a 10-Mbps network and the computer.
Orange — A good connection exists between a 100-Mbps network and the computer.
Yellow — A good connection exists between a 1 Gb (or 1000-Mbps) connection.
Off — The computer is not detecting a physical connection to the network.
SCSI controller

Dell Precision 650 computer — Integrated U320 SCSI

Dell Precision 450 computer — Optional add-in U320 SCSI

FSB clock

400- or 533-MHz data rate

Video

Type

Dell Precision 650 computer — AGP Pro 110 at 8x/4x/2x/1x (1.5 V) or PCI

Dell Precision 450 computer — AGP Pro 50 at 8x/4x/2x/1x (1.5 V) or PCI

Audio

Type

AC97, Sound Blaster emulation

Audio controller

Analog Devices Codec AD1981b

Stereo conversion

16-bit analog-to-digital; 20-bit digital-to-analog

Expansion Bus


Bus type

Dual PCI-X 1.0 (3.3 V only), PCI 2.2 (3.3 V/5.0 V)

AGP Pro 3.0 (1.5 V only)

Bus speed

PCI: 33 MHz; PCI-X: 66/100 MHz

AGP Pro: 66 MHz

Expansion-card connectors:

Dell Precision 650 computer — Three PCI-X connectors, two PCI slots, and one AGP 8x Pro110 connector

Dell Precision 450 computer — One PCI-X connector, two PCI slots, and one AGP 8x Pro50 connector

Drives

Externally accessible:

Dell Precision 650 computer

one 3.5-inch drive bay

three 5.25-inch drive bays

Dell Precision 450 computer

one 3.5-inch drive bay

two 5.25-inch drive bays

Internally accessible:

Dell Precision 650 computer

three bays for three 1-inch high or two 1.6-inch high hard drives

NOTE: You can purchase a conversion bracket from Dell that allows you to use a 5.25-inch drive bay as an additional hard drive bay.

Dell Precision 450 computer

two bays for two 1-inch high or one 1.6-inch high hard drives

Connectors

External connectors:

Serial

two 9-pin connectors; 16550-compatible

Parallel

one 25-hole connector (bidirectional)

IEEE 1394

Dell Precision 650 computer only — Two 6-pin serial connectors

Video

15-hole connector (on add-in video card)

Network connector

RJ45 connector

PS/2 (keyboard and mouse)

6-pin mini-DIN connector

USB

two USB 2.0-compliant connectors on the front panel; four USB 2.0-compliant connectors on the back panel

Audio

Dell Precision 650 computer— Three connectors for line-in, line-out, and microphone on back panel; one speaker/headphone and one microphone connector on the front panel

Dell Precision 450 computer— Three connectors for line-in, line-out, and microphone on back panel; one speaker/headphone on the front panel

System Board Connectors:

Primary IDE channel

40-pin connector

Secondary IDE channel

40-pin connector

Floppy drive

34-pin connector

SCSI

68-pin connector (Dell Precision 650 computer only)

CD drive audio interface

4-pin connector

Telephony (TAPI)

4-pin connector

Fans (3)

3-pin connector

I/O panel

34-pin connector

USB/IEEE 1394

16-pin connector

Key Combinations

<F2>

starts embedded system setup (during start-up only)

<F12>

changes boot sequence (during start-up only)

<Ctrl><Alt><F10>

launches the utility partition (if installed) during computer start-up

<Ctrl><Enter>

disables computer password at start-up (after correct password is entered)

Controls and Lights

Power control

push button

Power light

green light; blinking green in sleep state; dual-color for computer operations —green for power, yellow for diagnostics

Hard-drive access light

green

Link integrity light (on integrated network connector)

green light for 10-Mb operation; orange light for 100-Mb operation; yellow light for 1,000-Mb (1-Gb) operation

Activity light (on integrated network connector)

yellow blinking light

Diagnostic lights

four lights located on the front panel

Power

DC power supply:

Wattage

Dell Precision 650 computer: 460 W
Dell Precision 450 computer: 360 W

Heat dissipation

Dell Precision 650 computer: 1000 BTU/hr
Dell Precision 450 computer: 910 BTU/hr

Voltage

90 to 135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz

Backup battery

3-V CR2032 lithium coin cell

greenbrucelee

the dell model number would have been sufficient.

which model dell is the new graphics card in?

I suspect that because it is a dell (generally have low quality power supplies) that the power supply has had it because of the new graphics cards power requirements.

your best bet is to borrow a power supply that works and one that is sufficient to run that graphics card or use a multimeter on the power supply to see if it is ouputting the correct voltages.

JoeMorgan

it is a Dell precision 650, i have had the computer working for about 6 months with the new graphics card.

How would I fix it exactly?

thank you for the help, Joe

greenbrucelee

you need to borrow a power supply and use that to see if it will boot and if it does you need to buy a new power supply

or try putting the old graphics card in and see if it boots.

When power supplies are put under strain they can last for a long time until one day they decide they've had enough and don't work anymore.

JoeMorgan

nothing happens with the old graphics card, I cannot find the power supply in my computer? :S, shall i just unplug the connectors from the motherboard and plug in the ones from the other power supply?

JoeMorgan

is there any way i can just check the power supply?

greenbrucelee

to check the power supply (thats the thing that the cord goes into from the wall socket) you will have to get a digital multimeter to test wether it is putting out the correct voltages.

But since it sounds like your very inexperience I would recommend borrowing one of someone to replace the one you have before buying a new one.

The power supply will have cables coming out of it which go into the motherrboard and other equipment.

JoeMorgan

yeah, i just basically know how to fix a working computer, but not alot about the components, i will take a look soon, thank you.
Joe

JoeMorgan

Just had to replace the fuse in the power supply in the end, thank you for your help
Joe