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http://www.apushardware.com/faqs/kt7faq/kt7faq.htmWhy does my system not boot with the Asus V7700 AGP Card?
In an email to me from the support desk at Monarch Computer Systems, they said that problems occur 80% of the time with the V7700 Pure 32MB and V7700 Deluxe 64 MB, but that they have not seen this problem occur with the V7700 Deluxe 32MB or the V7700 Pure 64 MB. The problems do not occur with other motherboards.
This problem can sometimes be resolved by raising the I/O voltage in the BIOS to 3.4v and/or raising the AGP Driving Strength to EA or FF in the Advanced Chipset Features of the BIOS. It has also been reported that flashing to the 2.14 bios
available on the Asus web site (ftp page) solves the problem. Also see the ABIT FAE advice. If these solutions do not work for you, you may wish to return you card to Asus for a newer replacement - the fault appears to be theirs.
One user warned me that despite the above advice, with his KT7 and Asus 7700 deluxe graphics card (BIOS revision 2.15.01.14), he still could not achieve stability. He claimed that neither ASUS nor ABIT would accept responsibility and advised users to stay clear of this graphics card until the problem is resolved. My best guess is that the Asus 7700 must be marginally compatible with the KT7, depending on the tolerances of the particular components on each board. Hence the mixed reports of success. Your choice.
Another user found that by setting the Delay for HDD to 2 seconds in Advanced BIOS Features page of the BIOS allowed the machine to boot correctly - as it prevents both the disks and graphics card from drawing too much current at the same time.