Hewlett-Packard Co. said it would begin selling...

Hewlett-Packard Co. said it would begin selling its most powerful desktop computer ever after a delay caused by a shortage of computer memory chips. The Palo Alto-based firm had planned to offer the new computer, which is based on the Intel 80386 microprocessor, last May but was forced to postpone production because it could not obtain enough memory chips. The company said the new HP Vectra QS/16, base priced at $3,995, is designed for business users requiring a lot of computing power and for engineers and scientists involved in computer-aided design and manufacturing.