HP a6750f PC refused to boot at all after 1-1/2 weeks of use. Spent 2 hours with HP Tech phone Support - who never mentioned all of this model's identified problems (hard drive crashes/AMDRAIDX/Bios, etc). Repair guy says my unit needs a new motherboard; is this unit really worth repairing?

To see how to open your a6750F, go here (click on Upgrading & Servicing Guide):

https://support.hp.com/us-en/product/hp-pavilion-a6700-desktop-pc-series/3823602/model/3874716/manuals

Good luck.

From the information the hard drive has failed, or there might be a motherboard issue, This is where it will need someone to make the determination.

Detach the battery and attach it again, with the power cord unplugged, then plug it again, verify if is charging, if not take it to tech support, if it charge and have power, If power up but dont boot, try using the F8 key and try to enter in repair mode or safe mode. if can enter on repair computer (only vista and win7) use the start boot repair utility.

call on this number you can get the service center Support for HP products (United States only)

Be prepared to provide the following information: Serial Number (S/N), product name, model number, and a brief description of the issue. Support for:
Phone
Hours of operation
Additional information
HP and Compaq products for Home & Home Office use 800-HP invent
or
800-474-6836 24 hours a day, 7 days a week for most products U.S.: English and Spanish for most products. HP and Compaq products for business use 800-334-5144 24 hours a day, 7 days a week for most products U.S.: English

Interact online with HP:
• Chat: Chat with an online support technician.*
• E-mail: Support by e-mail.
• Submit support case: For business customers with a valid warranty.

* Chat is not available for all products. HP TouchSmart PC products
HP HDX Notebook PC products
HP Envy Notebook PC products
HP Firebird Desktop PC products 866-408-5408 24 hours a day, 7 days a week U.S.: English and Spanish Customers using TTY 877-656-7058 6:00 a.m. - 3:00 p.m. PT
Mon. – Fri.
excluding holidays Sales consultation (United States only) Consultation for:
Phone
Hours of operation
Additional information
General sales inquiries: Ask about any HP product, service or solution. *800-752-0900 Hours vary by menu selection.
Please direct all support inquiries to HP's product support phone numbers listed above U.S. only, English only For some inquiries, you may be directed to a toll number. Buy for home and home office:
Buy HP and Compaq products direct from the HP Home & Home Office Store. 888-999-4747 7 days a week. Open hours may vary seasonally.

Closed New Year's Day, Thanksgiving Day, Christmas Day.
U.S. only, English only. Buy for business: Buy HP and Compaq products direct from the HP Small & Medium Business Store. 800-888-9909 8:00 a.m. - 9:00 p.m. ET Mon. - Fri.

Closed weekends and holidays U.S. only, English only. All other inquiries (non-sales related) In English only
Phone
Hours of operation
Additional information
General inquiries *800-752-0900 Hours vary by menu selection.
Please direct all support inquiries to hp's product support phone numbers listed above U.S. only, English only.

Hi Lordztech,

Sorry about the problems you are having with your hp pavilion. Please try these few steps out and you;ll fix the problems.

Step 1. You power and it does not boot........just press the power button and hold until it powers off. Then moved on to pull off the battery of your hp pavilion. Get the battery back on and power the system on again. If the error continues please move on to step 2.

Step 2. If step two refuses to work then you would need to test the RAM on your HP to ensure that it's not damaged.

Step 3. Check the hard disk and ensure that it works properly as well. This last two steps should fix your problem.

One of the hard wares mentioned in Step 2 & Step 3 could be damaged.

Kind Regards

more cpu and a better graphics card, id say get a amd athlon x2 dual core [Cpu]
And a Nvidia Gefore 8800GT

Support for HP products (United States only)
HP and Compaq products
800-HP invent
or
800-474-6836 24 hours a day, 7 days a week for most products U.S.: English and Spanish for most products

Be prepared to provide the following information: Serial Number (S/N), product name, model number, and a brief description of the issue. Support for:
Phone
Hours of operation
Additional information
HP and Compaq products
800-HP invent
or
800-474-6836 24 hours a day, 7 days a week for most products U.S.: English and Spanish for most products. HP TouchSmart PC products

866-408-5408
24 hours a day, 7 days a week. U.S.: English and Spanish.
Compaq Presario PC products 800-OK Compaq
or
800-652-6672 24 hours a day, 7 days a week U.S.: English and Spanish. Customers using TTY 877-656-7058 6:00 a.m. - 3:00 p.m. PT
Mon. – Fri.
excluding holidays

If this is a HP LaserJet P2015dn Printer try the 24 hour # listed below.
I've spent countless hours trying to install new hardware by going on line but I eventually solve the problem when I break down and call the 24 HOUR NUMBER!

HP and Compaq products
800-HP invent
or
800-474-6836 24 hours a day, 7 days a week for most products U.S.: English and Spanish for most products
Be prepared to provide the following information: Serial Number (S/N), product name, model number
HP TouchSmart PC products
866-408-5408
24 hours a day, 7 days a week. U.S.: English and Spanish.
Compaq Presario PC products 800-OK Compaq
or
800-652-6672 24 hours a day, 7 days a week U.S.: English and Spanish. Customers using TTY 877-656-7058 6:00 a.m. - 3:00 p.m. PT
Mon. – Fri.
excluding holidays

If this is an HP Printer try the 24 hour # listed below.
I've spent countless hours trying to install new hardware by going on line but I eventually solve the problem when I break down and call the 24 HOUR NUMBER!

HP and Compaq products
800-HP invent
or
800-474-6836 24 hours a day, 7 days a week for most products U.S.: English and Spanish for most products
Be prepared to provide the following information: Serial Number (S/N), product name, model number
HP TouchSmart PC products
866-408-5408
24 hours a day, 7 days a week. U.S.: English and Spanish.
Compaq Presario PC products 800-OK Compaq
or
800-652-6672 24 hours a day, 7 days a week U.S.: English and Spanish. Customers using TTY 877-656-7058 6:00 a.m. - 3:00 p.m. PT
Mon. – Fri.
excluding holidays

If this is a HP LaserJet P2015dn Printer try the 24 hour # listed below.
I've spent countless hours trying to install solve printer problems by going on line but I eventually solve the problem when I break down and call the 24 HOUR NUMBER!

HP and Compaq products
800-HP invent
or
800-474-6836 24 hours a day, 7 days a week for most products U.S.: English and Spanish for most products
Be prepared to provide the following information: Serial Number (S/N), product name, model number
HP TouchSmart PC products
866-408-5408
24 hours a day, 7 days a week. U.S.: English and Spanish.
Compaq Presario PC products 800-OK Compaq
or
800-652-6672 24 hours a day, 7 days a week U.S.: English and Spanish. Customers using TTY 877-656-7058 6:00 a.m. - 3:00 p.m. PT
Mon. – Fri.
excluding holidays