I replaced 5 mother boards on 5 HP ultra slim desktops but i get 5 beeps 5 times with a red flasing light what could be cuasing the problem since i have just replaced the mother boards and all 5 units are having the same issue.

SOURCE: HP Compaq dc7800 Ultra-slim Desktop PC price ???

Average price of this desktop is around $1400 USD at the time of release. More information about this particular model can be found here

SOURCE: how much i can upgrade my d530 ultra slim desktop RAM and HDD

You can install up to a max 2 GB RAM and can add a 2nd hard disk
See the following Specs for your computer.
HP Compaq Business d530 Ultra-Slim (Pentium 4 2.8GHz, 256MB RAM, 40GB HDD, XP Pro) Type Personal computer

• Product Form Factor Ultra-slim desktop
• Built-in Devices Speaker
• Width 12.4 in
• Depth 13.1 in
• Height 2.8 in
• Weight 15.4 lbs
• Color Silver

• Type Intel Pentium 4 2.8 GHz
• Installed Qty 1.0
• Max processors supported 1.0

• Type L2 cache
• Installed Size 512.0 KB
• Cache Per Processor 512 KB

• Chipset type Intel 865G
• Data bus speed 533.0 MHz

• Installed Size 256.0 MB / 2.0 GB (max)
• Technology DDR SDRAM
• Memory Speed 333.0 MHz
• Memory Specification Compliance PC2700
• Form Factor DIMM 184-pin
• Upgrade Rule Max 2 x 1 GB module

• Type 1.0 x IDE - Integrated - PCI
• Controller interface type ATA-100

• Type 1 x Serial ATA - Integrated
• (2nd) storage controller interface type Serial ATA-150

• Floppy drive type None
• Hard Drive 1.0 x 40.0 GB - Standard - ATA-100 - 7200.0 rpm
• Hard Drive (2nd) None x None

SOURCE: I have an HP/Compaq dc-7600 ultra slim desktop. I

Don't think so, sorry.

Oaikhena Amaize

• 117 Answers
• Posted on Jul 04, 2011

SOURCE: When I try and start

Hello, would love to help. When last did you boot / shutdown successfully and what were you working on?